OMAPL138如何在Linux下使用EDMA3驱动

yyj

1. [code]EDMA sample test application
   
2. /*
   
3. * edma_test.c
   
4. *
   * X- ]+ o9 T- G. d- u
5. * brief  EDMA3 Test Application
   , p1 H0 Y4 I8 {' y
6. *
   8 [& d6 ~* z4 ^
7. *   This file contains EDMA3 Test code.
   
8. *
   9 l6 C$ _& H2 f  ~9 \/ u5 U/ m( @
9. *   NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
     F4 ~! r; `! n1 g% ?
10. *         REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
    
11. *         TO CHANGE.
    
12. *
    ! t: S9 b& s, ^  a( R8 P
13. * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
    
14. *
    
15. * This program is free software; you can redistribute it and/or
    
16. * modify it under the terms of the GNU General Public License as
    ( T* }7 Y% P* i( `  r
17. * published by the Free Software Foundation version 2.
    , u( _9 w% B2 }) r: [
18. *
    
19. * This program is distributed "as is" WITHOUT ANY WARRANTY of any
    
20. * kind, whether express or implied; without even the implied warranty
    - N9 s# r9 x8 \  o$ B+ B
21. * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    - Q* v; P- ]$ x4 ^3 m2 v; k
22. * GNU General Public License for more details.
    $ H% ^3 ]9 ?1 \; d
23. */
    
24. 
    
25. #include <linux/module.h>
    - f3 s; g  p4 ^) S- ~
26. #include <linux/init.h>
    
27. #include <linux/errno.h>
    1 ^/ }! F1 S7 h. o
28. #include <linux/types.h>
    
29. #include <linux/interrupt.h>
    
30. #include <asm/io.h>
    % {) _) I* q6 ?2 y6 M) `7 ]1 q
31. #include <linux/moduleparam.h>
    * @1 ^9 `# b" r' G9 I
32. #include <linux/sysctl.h>
    
33. #include <linux/mm.h>
      D/ U4 C" {0 S" n# N# z  j/ z
34. #include <linux/dma-mapping.h>
    
35. 
    : u9 l3 x3 }: z: O! C) X2 |5 @
36. #include <mach/memory.h>
    
37. #include <mach/hardware.h>
    6 P2 ?- h5 r/ h3 }, W+ Q
38. #include <mach/irqs.h>
    
39. #include <asm/hardware/edma.h>
    - t/ O! @7 Q4 U  I, X3 }7 Y6 R
40. 
    
41. #undef EDMA3_DEBUG
    + @+ E2 R% d/ l" L" x4 P
42. /*#define EDMA3_DEBUG*/
    
43. 
    
44. #ifdef EDMA3_DEBUG
    0 R- t" n; J) k# z+ G
45. #define DMA_PRINTK(ARGS...)  printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
    
46. #define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
    
47. #define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
    7 I; F3 w  n& W
48. #else
    ( w' r5 f" }; K% V
49. #define DMA_PRINTK( x... )
    / T% t7 ^$ w7 T0 Q! Z0 e1 n2 b6 \
50. #define DMA_FN_IN
    5 c+ a% F+ B! S* h& [( O" {# B  ?
51. #define DMA_FN_OUT
    ' s- a7 D. G  j. d8 o
52. #endif
    
53. 
    3 a% b' Q0 W' Z5 }0 H# j
54. #define MAX_DMA_TRANSFER_IN_BYTES   (32768)
    ; t( R* |" F8 Y2 D& p6 T
55. #define STATIC_SHIFT                3
    2 H1 |7 o- }$ L) w
56. #define TCINTEN_SHIFT               20
    
57. #define ITCINTEN_SHIFT              21
    
58. #define TCCHEN_SHIFT                22
    6 }* S: C& b3 q% ^
59. #define ITCCHEN_SHIFT               23
    
60. 
    
61. static volatile int irqraised1 = 0;
    , @, w% q  U! Y0 ~# i
62. static volatile int irqraised2 = 0;
    
63. 
    4 Q0 v+ d$ Y( G7 B
64. int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
65. int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    ( j% E1 D7 w7 {
66. int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
    
67. 
    . K9 i' |: Y- X6 ?1 r2 K9 }2 m: c
68. dma_addr_t dmaphyssrc1 = 0;
    6 b( ]3 Z3 U: _4 ?/ j, V5 c9 I
69. dma_addr_t dmaphyssrc2 = 0;
    : S9 l+ d* a, e
70. dma_addr_t dmaphysdest1 = 0;
    
71. dma_addr_t dmaphysdest2 = 0;
    ; y. }% U1 M4 h; G5 c
72. 
    3 z, r, m0 @) `8 D
73. char *dmabufsrc1 = NULL;
    
74. char *dmabufsrc2 = NULL;
    + k1 p& z( R" k0 Z) e
75. char *dmabufdest1 = NULL;
    
76. char *dmabufdest2 = NULL;
    " o5 _' W. h1 Y* g+ M1 R
77. 
    
78. static int acnt = 512;
    8 o& M" X- s9 k0 L" g+ j
79. static int bcnt = 8;
    5 |' }: h( ]! ~# F9 _8 N- p& }8 s: A+ \
80. static int ccnt = 8;
    
81. 
    
82. module_param(acnt, int, S_IRUGO);
    ' C/ _% J- Q# \4 h
83. module_param(bcnt, int, S_IRUGO);
    
84. module_param(ccnt, int, S_IRUGO);

复制代码

( T- o* Z( G$ y
/ e1 Y, Q4 _8 \, H      这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
( U; N3 u) b' w, _% ~arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
     我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。


  C/ X# ]. j/ b  N% j# l